Psoriatic arthritis
Psoriasis is a common inflammatory skin disorder with a spectrum of presentation varying from minor cutaneous involvement to severely disabling generalised disease. An associated arthritis affects a proportion of patients with psoriasis and may lead to significant morbidity. Methodological difficulties have hindered precise determination of the frequency of psoriatic arthritis (PsA), but recent studies estimate the prevalence to be about 0.1%.
Dermatology in practice 2002; 10(6): 6–9
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